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Finding the Fourth Proportional to 10,505.78, 15,759.11 and 4,888.71

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Solution

The fourth proportional to 10,505.78, 15,759.11 and 4,888.71 is: 7,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,505.78 : 15,759.11 = 4,888.71 : x
  2. Step 2: Convert to fraction form
    10,505.78/15,759.11 = 4,888.71/x
  3. Step 3: Cross multiply
    10,505.78x = 15,759.11 × 4,888.71
  4. Step 4: Simplify right side
    10,505.78x = 77,041,694.20
  5. Step 5: Solve for x
    x = 77,041,694.20/10,505.78
  6. Step 6: Final answer
    x = 7,333.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.